Exhaust alarm and lock



Nm?. 11 9 1924.. l,5l 4.658

s. CROCE l EXHAUST ALARM AND LOCK Filed Feb. 9. 1924 www ull

Patented Nov. ll, 1924.

SAM CROCE, OF ST. JOSEPH, MISSOURI.

EXHAUST ALARM ANI) LOCK.

Application filled February 9, 1924. Serial No. 691,804.

To all l'1o/10m it may concern.:

Be it known that I, SAM CRUCE, a citizen of Italy, yresiding at St. Joseph, in the county ot' Buchanan and State of Missouri, have invented new and useful Improvements in Exhaust Alarms and Locks, ot which the following is a speciiication.

The object of this invention is to provide :in alarm :tor connection with the exhaust pipe of an internal combustion engine, this device constituting an improvement over that disclosed in my U. S. Patent No. 1,450,138.

A further object is to provide an alarm of this type controlled in a particular manner by a key operated lock, so that the alarm may be set byv an authorized person, upon leaving the car, and will be operated i'or sounding an alarm if the engine is started before the lock is released by the use of the key.

i1 still further object is toy provide for the sounding ot the alarm by the pressure ot exhaust gases, without permitting of the escape of the gases in sufficient volume to relieve back pressure.

lith the foregoing and other objects in View, the invention consists in the novel construction and arrangement of elements ('lescribed illustrated and claimed, it being understood that modications may be made within the scope of the claims without departing vtroni the spirit of the invention.

In the drawings, Figure 1 shows the device in elevation, as applied to an exhaust duct, appearing in section; Figure 2 is a View in vertical section; Figure 3 is a section on line of Figure 2; Figure 4: is a top plan view of the bell housing; Figure 5 shows the handle for rotating the valve; Figure 6 shows the lock, chiefly in section; Figure 7 is a bottom plan of the lock body and locking bolt. M

The body 10 is provided with a bore 11 and with a bore 12 extending perpendicularly with reference to the bore first named, the element 10 having internal threads 13 ttor connection with exhaust pipe 14, and having external threads 15 on the opposite side.

IVithin the bore 12 is a valve 16 having a large bore 17 adapted to aline with bore 11 when the engine is running, and the free escape of exhaust gases is desired. The valve has a smaller bore 18 entending at an ausl@ with bore 17 and designed t@ permit of the passage ot gases in small.y volume when the valve is rotated to cut off bore 11 and thereby prevent the starting of the engine. The gases through bore or port 18 pass through whistle 2O which is threaded into boss 21 ot valve 16 and retained by set screw 22.

The whistle 2O is inclosed in a conical housing or bell like structure y25 provided with slots 26, and `having screw threaded connection with annular portion 27 of element 10. The lower edge of device 25 abuts the flange 28 of valve 16.

In the upper part of the housing 25 is a bore 30 communicating with a larger bore 31 provided with a shoulder 32 on which housing 33 rests. The lock 34 within this housing and within bore 30 is retained in part by resilient ring 35 engaging groove 36, and in part by upper disk 37 engaging the under side o'lf flange 38 of housing 33.

Disk 37 is provided with a key slot 38, and the lock includes a bolt 39 adapted to engage either recess Ll1 or 42 and hold the valve 16 in position for keeping the exhaust open through the manifold, or closing the main exhaust and allowing a small volume of exhaust gases to escape through the whistle. Vhen the locking bolt 39 is released, and the body of the lock is rotated, whistle 2O and valve 16 are rotated, because of set screws 227 22 located as shown.

Handle 43 is connected with housing 33 by screw 114C, and the end of the latter engages recess 45 and Jfurther retains the housing. This element 33 may `be rotated in view of the connection effected by ring 35, so that it an attempt is made to torce the lock in this manner, it will be discovered that this rotation produces no result.

It will be observed that the structure includes a. stationary element for connection with the exhaust manifold, a stationary conical housing 25 for the whistle and lock,and a rotatable structure including the valve, whistle and lock.

IVhat I claim is:

1. In a device of the class described, a body having bores at an angle with each other, a valve for closing one of the bores and having a port for opening this bore upon the yrotation of the valve, a stationary tubular housing connected with the other bore, a whistle mounted on the valve and inclosed covered and protected by the tubulw bensi-Heu Said.l Valve hanne e vor@ leed ing to the whistle from the bore closed by the valve, this port being closed when the valve is open, and means for rotating the valve, said housing permanently maintaining a predetermined position with reference to the body.

2. In a device of the class described, a body having bores at an angle with each other, a valve for Closing one of the bores :ind having a port for opening this bore upon the rotation of the valve, a stationary tubular and. ported housing rigidly connected with the other bore, a Whistle mounted on the valve and Within the housing, said .falve lian-g a port leading to the Whistle from the bore closed by the valve, means for rotating the valve, and nie-ans for lool/ring the valve to the tubular housing, said housing permanentlyy maintaining a predeter- 20 nined position with reference to the body.

v3. In a device of the class described, a body having a main bore and a second bore at an angletherewith, a valve for Closing the main bore and having a port for opening the bore upon the rotation of the valve, a stationary tubular and ported housing' rigidly connected with the second bore in said body, a Whistle mounted on the valve and Within the housing, the valve having a port leading to the Whistle from the bore irst named, and a lock rigidly connected with the Whistle and valve, said lock when released permitting' the valve t0 rotate to positionto permit gases to pass from the main bore of' the body to the Whistle, said housing permanently maintaining a predeteianined'position with reference to the body. A

In testimony uiliereo-I affix niy signature.

SAM CROCE. 

